#Question
8 hours ago
Asking random maths question- Level- 1
umm lets see;
For n belonging to Natural Nos, if arc cot 3 + arc cot 4 + arc cot 5+ arc cot n = pi/4, then n is equal to??
a) 69
b) 67
c) 49
d) 47
well yeah i know its an anime site, but still wanted to see the responses